org.apache.commons.configuration.tree.xpath
Class ConfigurationNodePointer

java.lang.Object
  org.apache.commons.jxpath.ri.model.NodePointer
      org.apache.commons.configuration.tree.xpath.ConfigurationNodePointer

All Implemented Interfaces:

Serializable, Cloneable, Comparable, org.apache.commons.jxpath.Pointer

 class ConfigurationNodePointer
extends org.apache.commons.jxpath.ri.model.NodePointer

A specific NodePointer implementation for configuration nodes.

This is needed for queries using JXPath.

Since:

1.3

Version:

$Id: ConfigurationNodePointer.java 439648 2006-09-02 20:42:10Z oheger $

Author:

Oliver Heger

Field Summary

Fields inherited from class org.apache.commons.jxpath.ri.model.NodePointer

index, locale, parent, UNKNOWN_NAMESPACE, WHOLE_COLLECTION

Constructor Summary

ConfigurationNodePointer(ConfigurationNode node, Locale locale)
Creates a new instance of ConfigurationNodePointer.

ConfigurationNodePointer(org.apache.commons.jxpath.ri.model.NodePointer parent, ConfigurationNode node)
Creates a new instance of ConfigurationNodePointer and initializes it with its parent pointer.

Method Summary

org.apache.commons.jxpath.ri.model.NodeIterator	attributeIterator(org.apache.commons.jxpath.ri.QName name) Returns an iterator for the attributes that match the given name.
org.apache.commons.jxpath.ri.model.NodeIterator	childIterator(org.apache.commons.jxpath.ri.compiler.NodeTest test, boolean reverse, org.apache.commons.jxpath.ri.model.NodePointer startWith) Returns an iterator for the children of this pointer that match the given test object.
int	compareChildNodePointers(org.apache.commons.jxpath.ri.model.NodePointer pointer1, org.apache.commons.jxpath.ri.model.NodePointer pointer2) Compares two child node pointers.
Object	getBaseValue() Returns this node's base value.
Object	getImmediateNode() Returns the immediate node.
int	getLength() Returns this node's length.
org.apache.commons.jxpath.ri.QName	getName() Returns this node's name.
Object	getValue() Returns the value of this node.
boolean	isAttribute() Checks whether this node pointer refers to an attribute node.
boolean	isCollection() Returns a flag if this node is a collection.
boolean	isLeaf() Returns a flag whether this node is a leaf.
void	setValue(Object value) Sets the value of this node.
boolean	testNode(org.apache.commons.jxpath.ri.compiler.NodeTest test) Tests if this node matches the given test.

Methods inherited from class org.apache.commons.jxpath.ri.model.NodePointer

asPath, clone, compareTo, createAttribute, createChild, createChild, createPath, createPath, getDefaultNamespaceURI, getImmediateParentPointer, getImmediateValuePointer, getIndex, getLocale, getNamespaceResolver, getNamespaceURI, getNamespaceURI, getNode, getNodeValue, getParent, getPointerByID, getPointerByKey, getRootNode, getValuePointer, isActual, isContainer, isDefaultNamespace, isLanguage, isNode, isRoot, namespaceIterator, namespacePointer, newChildNodePointer, newNodePointer, printPointerChain, remove, setAttribute, setIndex, setNamespaceResolver, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ConfigurationNodePointer

public ConfigurationNodePointer(ConfigurationNode node,
                                Locale locale)

Creates a new instance of ConfigurationNodePointer.

Parameters:

node - the node

locale - the locale

ConfigurationNodePointer

public ConfigurationNodePointer(org.apache.commons.jxpath.ri.model.NodePointer parent,
                                ConfigurationNode node)

Creates a new instance of ConfigurationNodePointer and initializes it with its parent pointer.

Parameters:

parent - the parent pointer

node - the associated node

Method Detail

isLeaf

public boolean isLeaf()

Returns a flag whether this node is a leaf. This is the case if there are no child nodes.

Specified by:

isLeaf in class org.apache.commons.jxpath.ri.model.NodePointer

Returns:

a flag if this node is a leaf

isCollection

public boolean isCollection()

Returns a flag if this node is a collection. This is not the case.

Specified by:

isCollection in class org.apache.commons.jxpath.ri.model.NodePointer

Returns:

the collection flag

getLength

public int getLength()

Returns this node's length. This is always 1.

Specified by:

getLength in class org.apache.commons.jxpath.ri.model.NodePointer

Returns:

the node's length

isAttribute

public boolean isAttribute()

Checks whether this node pointer refers to an attribute node. This method checks the attribute flag of the associated configuration node.

Overrides:

isAttribute in class org.apache.commons.jxpath.ri.model.NodePointer

Returns:

the attribute flag

getName

public org.apache.commons.jxpath.ri.QName getName()

Returns this node's name.

Specified by:

getName in class org.apache.commons.jxpath.ri.model.NodePointer

Returns:

the name

getBaseValue

public Object getBaseValue()

Returns this node's base value. This is the associated configuration node.

Specified by:

getBaseValue in class org.apache.commons.jxpath.ri.model.NodePointer

Returns:

the base value

getImmediateNode

public Object getImmediateNode()

Returns the immediate node. This is the associated configuration node.

Specified by:

getImmediateNode in class org.apache.commons.jxpath.ri.model.NodePointer

Returns:

the immediate node

getValue

public Object getValue()

Returns the value of this node.

Specified by:

getValue in interface org.apache.commons.jxpath.Pointer

Overrides:

getValue in class org.apache.commons.jxpath.ri.model.NodePointer

Returns:

the represented node's value

setValue

public void setValue(Object value)

Sets the value of this node.

Specified by:

setValue in interface org.apache.commons.jxpath.Pointer

Specified by:

setValue in class org.apache.commons.jxpath.ri.model.NodePointer

Parameters:

value - the new value

compareChildNodePointers

public int compareChildNodePointers(org.apache.commons.jxpath.ri.model.NodePointer pointer1,
                                    org.apache.commons.jxpath.ri.model.NodePointer pointer2)

Compares two child node pointers.

Specified by:

compareChildNodePointers in class org.apache.commons.jxpath.ri.model.NodePointer

Parameters:

pointer1 - one pointer

pointer2 - another pointer

Returns:

a flag, which pointer should be sorted first

attributeIterator

public org.apache.commons.jxpath.ri.model.NodeIterator attributeIterator(org.apache.commons.jxpath.ri.QName name)

Returns an iterator for the attributes that match the given name.

Overrides:

attributeIterator in class org.apache.commons.jxpath.ri.model.NodePointer

Parameters:

name - the attribute name

Returns:

the iterator for the attributes

childIterator

public org.apache.commons.jxpath.ri.model.NodeIterator childIterator(org.apache.commons.jxpath.ri.compiler.NodeTest test,
                                                                     boolean reverse,
                                                                     org.apache.commons.jxpath.ri.model.NodePointer startWith)

Returns an iterator for the children of this pointer that match the given test object.

Overrides:

childIterator in class org.apache.commons.jxpath.ri.model.NodePointer

Parameters:

test - the test object

reverse - the reverse flag

startWith - the start value of the iteration

testNode

public boolean testNode(org.apache.commons.jxpath.ri.compiler.NodeTest test)

Tests if this node matches the given test. Configuration nodes are text nodes, too because they can contain a value.

Overrides:

testNode in class org.apache.commons.jxpath.ri.model.NodePointer

Parameters:

test - the test object

Returns:

a flag if this node corresponds to the test